On a successful form submission, error message etc., check if there's
browser history and render a button that takes the user back to
a meaningful origin from the dead-end message page.
Closes#527.
BasicAuth without an explicit landing page or a logout option has
sometimes been confusing to users. This commit adds a static
landing page on / with a login link and a logout option in the admin
that "logs out" BasicAuth session by posting invalid credentials to
the server to obtain a 401.
- Change public and admin frontend primary colours.
- Change images.
- Refactor and fix styling on public pages.
- Remove CSS grid lib from public pages.
- Update Buefy and fix broken component styles (modal, toast).
Sending th optional flag as `trunue` in the POST /api/subscrirs
body will skip sending opt-iconfirmation e-mails to subscribers
and mark list subscriptions in the request a`confirmed`.
In addition to generating HTML forms for selected public lists,
the form page now shows a URL (/subscription/form) that can be
publicly shared to solicit subscriptions. The page lists all
public lists in the database. This page can be disabled on the
Settings UI.
- Added as a setting in the settings UI.
- Refactor Messenger.Push() method to accept messenger.Message{}
instead of a growing number of positional arguments.
